Purchase requisition: how finance leaders gain control of their spend

Purchases rarely start with a purchase order. They start with someone needing something, often quickly and sometimes before finance has a clear view of the cost, the purpose or the department responsible. When buying happens this way, spending becomes harder to track, forecasts become less reliable and internal policies are harder to enforce.

That’s where purchase requisitions come in. They give finance teams a structured way to approve spending before anyone commits money, contributing to a clearer view of spend and stronger control. 

This shift from reacting to purchases after the fact to approving them in advance turns reactive buying into managed spend. It makes everyday purchasing a source of financial insight rather than uncertainty.
 

What is a purchase requisition?

A purchase requisition is an internal document that employees use to ask for approval before buying goods or services. It usually marks the start of the procurement process and proceeds as follows:

1. A requester submits a purchase request

2. Managers or budget owners review it through internal approval

3. Your procurement team or purchasing department creates the purchase order once the request is approved.

For finance teams this step is critical as it creates a clear checkpoint to review and approve spending before funds are committed.

A clear purchase requisition process lets you see what teams plan to buy, how much they expect to spend and which department leader has approved it. With this visibility you can forecast more accurately, keep spend management under control and maintain a clear audit trail across the procure-to-pay process. It also creates an audit trail that adheres to compliance, respecting both internal procurement policies and external regulations.

Increasingly, organisations are managing this process through a digital requisition system that replaces email chains and Excel spreadsheets with automated, real-time workflows. Instead of chasing emails or documents, approval workflows move automatically and everyone involved can see the same information as requests progress. The procurement team and accounts payable can quickly understand purchases and how they fit into supplier management and the wider supply chain.
 

Purchase requisition vs purchase order

These documents differ in their purpose and the parties involved. One is internal, involving an employee seeking approval before buying, while the other is sent to a supplier to confirm the purchase and create a binding agreement.

A purchase requisition stays inside your organisation. A requester raises it, managers or budget owners review it and the procurement team uses it to check budgets, business need and its adherence to compliance and policies before they agree to spend money on it. This is where financial control and spend management happen.

A purchase order goes to the supplier. The procurement team or purchasing department confirms the price, delivery date and payment terms so the supplier can fulfil the order and accounts payable can prepare for invoice processing.

When the preparation of both documents connects in a single procure-to-pay process you can reduce maverick spend and keep purchasing structured.
 

How purchase requisitions curb maverick spend

Reducing costs sits at the top of most procurement teams’ agendas. PwC’s 2024 Digital Procurement Survey found that 65% of procurement teams say cost control is their top objective. Yet controlling costs becomes difficult when spending happens outside approved channels.

This problem is widespread. Ardent Partners’ CPO Rising 2025 report shows that procurement teams don’t control almost 30% of organisational spend. What’s worse is that many teams can’t see this maverick spend due to limited visibility and manual reporting. According to the same Ardent Partners report, less than 10% of organisations have fully automated spend analysis while more than a quarter still rely on manual reporting. 

Purchase requisitions help close this gap by introducing approval and oversight before anyone places an order. 

Investigating procurement efficiency, McKinsey found that working with already-contracted suppliers can reduce maverick spend and preserve procurement value by 10–50%. This figure demonstrates how structured purchasing directly protects margins and creates measurable cost savings.

In practice a well-designed purchase requisition process creates control at the very start of the buying cycle before anyone commits money and invoices arrive. The following steps are usually involved:

• Standardising requests: every purchase request captures the same information such as the business need, estimated cost, cost centre and supplier. This gives finance and procurement teams a consistent basis for review.

• Routing requests: approval workflows route requests to the right department leader or budget owner so they can check the request before placing an order. This prevents unauthorised purchases and keeps spending aligned with budgets.

• Monitoring spend in real time: finance can see planned expenses as they move through the approval process rather than discovering them later through invoices.

• Linking approved requisitions to purchase orders: purchases abide by a controlled procure-to-pay process, improving compliance and reducing off-contract buying.
  
  

When organisations standardise requisitions and monitor spending in this way they gain the insight and control required to prevent maverick spend before it happens rather than trying to correct it afterwards.

Solutions such as Amazon Business can help you implement these principles in a few different ways. The Spend Visibility feature gives finance and procurement a real-time view of purchasing activity so you can spot unusual spending patterns, track expenditure by department and act before costs spiral. With Guided Buying, you can steer employees towards approved suppliers and price ranges, enabling teams to follow policy without slowing down day-to-day purchasing.

Amazon Business’s approval workflows route purchase requests to the right approvers automatically while enforcing spending thresholds and maintaining a clear audit trail across the procure-to-pay process. And anomaly detection flags unusual orders or patterns that fall outside normal purchasing behaviour so you can identify potential maverick spend early.
 

Purchase requisition process and approvals

A typical purchase requisition workflow follows a clear sequence that allows finance to maintain control and visibility across the procurement process:

1. Request submission: an employee raises a purchase request outlining what they need, the estimated cost and the business purpose

2. Approval routing: the system routes the request to the appropriate manager or budget owner for approval

3. Purchase order creation: once approved the procurement team creates a purchase order and sends it to the supplier

4. Fulfilment and payment: the supplier delivers the order and accounts payable matches the invoice to the approved purchase.
   
   

To keep this process effective finance teams usually apply a few controls:

• Approval thresholds by cost centre: different spending levels trigger different approvers, ensuring larger purchases undergo greater checks

• Multi-tier approval routing: requests move through the right stakeholders in a sequence so managers confirm the business need, finance checks budgets and procurement ensures compliance is adhered to

• Pre-approved supplier lists: employees buy from vetted vendors which facilitates agreed pricing, adherence to compliance and reliable delivery

• Spend visibility reporting: finance can track requests and committed spend in real time which makes forecasting and control much easier.
  
  

With automation, you can streamline the digital procurement process by reducing manual work and consistently enforcing policies without slowing teams down.
 

What to include in a purchase requisition form

A clear purchase requisition form captures the key details that finance and procurement need to review a request quickly and accurately:

• Requester name and department: the person raising the request and from which budget

• Cost centre: shows finance where to allocate the spend for budgeting and reporting

• Item description: enables approvers to assess the business need

• Business justification: clarifies why the purchase is necessary

• Estimated cost: helps approvers check budgets before approving the request

• Supplier details and contact information: show who the organisation plans to buy from, allowing procurement to check approved suppliers and pricing.

Solutions like Amazon Business simplify this process by pre-filling supplier details which cuts down on manual entry so you can submit accurate requests more quickly.
 

From manual requisitions to smart buying

Many organisations still manage purchase requisitions using emails, spreadsheets and disconnected systems. This approach not only slows approvals and makes requests harder to track but also limits visibility into spend. According to Ardent Partners’ AP Metrics That Matter in 2025 report, this lack of visibility into invoice and payment data remains a major challenge for finance and accounts payable teams.

Automation changes that. When requisitions, approvals and purchasing data sit in one system your finance team can track requests in real time. The system enforces policy automatically while analysing spending patterns with far greater accuracy and detail than teams can manually.

As Coupa’s 2025 Annual Total Spend Management Benchmark Report notes, when teams gain a clearer view of total spend they can spot risks earlier, control costs more effectively and strengthen both compliance and supplier management.

With solutions such as Amazon Business, you can put these principles into practice in several ways. But whereas other procurement systems focus on approvals and reporting in isolation, Amazon Business integrates these measures across the everyday purchasing experience. This means employees can buy through guided, compliant channels while finance and procurement maintain a clear view of what’s going on and policies are enforced.

Amazon Business offers several features to help you streamline procurement and strengthen control:

• Spend Visibility provides analytics that show purchasing activity and trends across departments

• Guided Buying directs employees towards approved suppliers and suitable price ranges, keeping purchases compliant and consistent across your organisation

• Pay by Invoice gives finance teams more flexibility when managing cash flow and payment terms

• Integration with 300+ procurement systems connects purchasing data with existing enterprise resource planning (ERP) and procure-to-pay workflows, reducing manual work and improving accuracy.
   

A strong foundation for managed spend

Purchase requisitions often look like a small administrative step but in practice they shape the way money moves through your organisation. When your procurement team reviews requests before anyone places an order they gain insight earlier. This makes it easier to enforce policies and optimise spending, transforming your organisation from one that reacts to purchases after the fact to one that guides spending from the start.

The most effective finance teams treat requisitions as part of a wider spend management strategy. The best way to do this is to standardise requests, automate approvals and monitor purchasing data in real time. This way you spot risks sooner and keep everyday buying aligned with budgets and contracts.

If there’s one practical step to start with it’s this. Make sure every purchase begins with a clear, structured request. This single change gives finance earlier visibility, keeps spending in line with policy and makes forecasting more reliable. 

Tools such as Amazon Business simplify this practice by pre-filling supplier details and then automating approvals and providing real-time spend insight. Contact us today to see how we can help your organisation spend with control, visibility and insight.